diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 16:59:10 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 16:59:10 -0700 |
commit | 8e3ade251bc7c0a4f0777df4dd34343a03efadba (patch) | |
tree | 6c0b78731e3d6609057951d07660efbd90992ad0 /mm | |
parent | e317234975cb7463b8ca21a93bb6862d9dcf113f (diff) | |
parent | e075f59152890ffd7e3d704afc997dd686c8a781 (diff) |
Merge branch 'akpm' (Andrew's patch-bomb)
Merge second batch of patches from Andrew Morton:
- various misc things
- core kernel changes to prctl, exit, exec, init, etc.
- kernel/watchdog.c updates
- get_maintainer
- MAINTAINERS
- the backlight driver queue
- core bitops code cleanups
- the led driver queue
- some core prio_tree work
- checkpatch udpates
- largeish crc32 update
- a new poll() feature for the v4l guys
- the rtc driver queue
- fatfs
- ptrace
- signals
- kmod/usermodehelper updates
- coredump
- procfs updates
* emailed from Andrew Morton <akpm@linux-foundation.org>: (141 commits)
seq_file: add seq_set_overflow(), seq_overflow()
proc-ns: use d_set_d_op() API to set dentry ops in proc_ns_instantiate().
procfs: speed up /proc/pid/stat, statm
procfs: add num_to_str() to speed up /proc/stat
proc: speed up /proc/stat handling
fs/proc/kcore.c: make get_sparsemem_vmemmap_info() static
coredump: add VM_NODUMP, MADV_NODUMP, MADV_CLEAR_NODUMP
coredump: remove VM_ALWAYSDUMP flag
kmod: make __request_module() killable
kmod: introduce call_modprobe() helper
usermodehelper: ____call_usermodehelper() doesn't need do_exit()
usermodehelper: kill umh_wait, renumber UMH_* constants
usermodehelper: implement UMH_KILLABLE
usermodehelper: introduce umh_complete(sub_info)
usermodehelper: use UMH_WAIT_PROC consistently
signal: zap_pid_ns_processes: s/SEND_SIG_NOINFO/SEND_SIG_FORCED/
signal: oom_kill_task: use SEND_SIG_FORCED instead of force_sig()
signal: cosmetic, s/from_ancestor_ns/force/ in prepare_signal() paths
signal: give SEND_SIG_FORCED more power to beat SIGNAL_UNKILLABLE
Hexagon: use set_current_blocked() and block_sigmask()
...
Diffstat (limited to 'mm')
-rw-r--r-- | mm/hugetlb.c | 25 | ||||
-rw-r--r-- | mm/madvise.c | 8 | ||||
-rw-r--r-- | mm/memory.c | 8 | ||||
-rw-r--r-- | mm/oom_kill.c | 4 |
4 files changed, 22 insertions, 23 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index afa057a1d3f..b8ce6f45095 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2331,16 +2331,23 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, if (huge_pmd_unshare(mm, &address, ptep)) continue; + pte = huge_ptep_get(ptep); + if (huge_pte_none(pte)) + continue; + + /* + * HWPoisoned hugepage is already unmapped and dropped reference + */ + if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) + continue; + + page = pte_page(pte); /* * If a reference page is supplied, it is because a specific * page is being unmapped, not a range. Ensure the page we * are about to unmap is the actual page of interest. */ if (ref_page) { - pte = huge_ptep_get(ptep); - if (huge_pte_none(pte)) - continue; - page = pte_page(pte); if (page != ref_page) continue; @@ -2353,16 +2360,6 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, } pte = huge_ptep_get_and_clear(mm, address, ptep); - if (huge_pte_none(pte)) - continue; - - /* - * HWPoisoned hugepage is already unmapped and dropped reference - */ - if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) - continue; - - page = pte_page(pte); if (pte_dirty(pte)) set_page_dirty(page); list_add(&page->lru, &page_list); diff --git a/mm/madvise.c b/mm/madvise.c index f5ab745672b..1ccbba5b667 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -65,6 +65,12 @@ static long madvise_behavior(struct vm_area_struct * vma, } new_flags &= ~VM_DONTCOPY; break; + case MADV_DONTDUMP: + new_flags |= VM_NODUMP; + break; + case MADV_DODUMP: + new_flags &= ~VM_NODUMP; + break; case MADV_MERGEABLE: case MADV_UNMERGEABLE: error = ksm_madvise(vma, start, end, behavior, &new_flags); @@ -293,6 +299,8 @@ madvise_behavior_valid(int behavior) case MADV_HUGEPAGE: case MADV_NOHUGEPAGE: #endif + case MADV_DONTDUMP: + case MADV_DODUMP: return 1; default: diff --git a/mm/memory.c b/mm/memory.c index 3416b6e018d..6105f475fa8 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3623,13 +3623,7 @@ static int __init gate_vma_init(void) gate_vma.vm_end = FIXADDR_USER_END; gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; gate_vma.vm_page_prot = __P101; - /* - * Make sure the vDSO gets into every core dump. - * Dumping its contents makes post-mortem fully interpretable later - * without matching up the same kernel and hardware config to see - * what PC values meant. - */ - gate_vma.vm_flags |= VM_ALWAYSDUMP; + return 0; } __initcall(gate_vma_init); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4198e000f41..46bf2ed5594 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -521,11 +521,11 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, pr_err("Kill process %d (%s) sharing same memory\n", task_pid_nr(p), p->comm); task_unlock(p); - force_sig(SIGKILL, p); + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true); } set_tsk_thread_flag(victim, TIF_MEMDIE); - force_sig(SIGKILL, victim); + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true); } #undef K |